Black Magic Debug vs GDB

Black Magic Debug is a free JTAG/SWD debugger for embedded microcontrollers, aimed at professional developers who want control over build systems and testing environments. Its firmware includes a GDB server that detects targets automatically, without target-specific configuration scripts. Debugging tools include watchpoints, flash memory breakpoints, memory and register examination, and flash programming. The project describes support for ARM Cortex-M and Cortex-A microcontrollers; its listed target platforms also include RISC-V, and remote debugging is supported. The probe connects as a standard USB CDC ACM virtual serial device, with no special driver needed for this interface on Linux or macOS. The debugger works with Linux, macOS, and Windows. The GDB server also supports semihosting and host I/O, Serial Wire Output, and USB DFU firmware upgrades. Documentation includes guides for PlatformIO and STM32CubeIDE. It can also be compiled as a desktop application and used with BMP, ST-Link, FTDI-MPSSE, SEGGER J-Link, or CMSIS-DAP adapters. Desktop-app programming is a little slower, though BMP development may be faster because firmware upload is unnecessary. Getting started requires a Black Magic Probe and a suitable target toolchain.

GDB is a free debugger for inspecting a program as it runs or after it crashes. It can launch programs, stop execution under specified conditions, examine the stopped state, and change program state for experimentation. A target can run on the same machine, remotely, or in a simulator. GDB runs on popular UNIX variants, Microsoft Windows, and macOS, and supports languages including C, C++, Rust, Go, Ada, Fortran, Assembly, and others. Debugging options include conditional and exception breakpoints, core dump debugging, and record-and-replay with forward and reverse execution on supported platforms. For remote debugging, gdbserver connects a program to GDB. The console interpreter and GDB/MI are available, while Python extensions and the Debugger Adapter Protocol require Python support at build time. GDB is part of the GNU Project and is free software under the GNU General Public License, which allows copying, adaptation, and redistribution with source access. Official releases are available from GNU and Sourceware, with signature verification through the GNU keyring. Version 18.1 was released on September 25, 2026.